Directions: Read the following information carefully and answer the questions given below:

Nine containers - P, Q, R, S, T, U, V, W, and X - are placed one above another in a single vertical stack, but not necessarily in the same order. Container R is placed fourth from the top of the stack. Only three containers are placed between container R and container Q, where container Q is kept below container R. Container U is kept immediately below container Q. Container W is placed at the top of the stack. Only one container is placed between container W and container T. Container P is placed immediately above container T. Two containers are kept between container S and container Q. Container X is placed immediately below container S. Container V is placed between container X and container Q.

How many containers are positioned above container S?

The correct answer is Four.

Step-by-step Explanation:

Let us determine the vertical stack arrangement of the 9 containers from top (1) to bottom (9) step-by-step using the given conditions:
1. Position of R: Container R is placed fourth from the top of the stack.
⇒ Position 4 = R

2. Position of Q: Only three containers are placed between container R and container Q, where Q is below R.
⇒ Position 8 = Q (containers at 5, 6, and 7 are between them)

3. Position of U: Container U is kept immediately below container Q.
⇒ Position 9 = U

4. Position of W: Container W is placed at the top of the stack.
⇒ Position 1 = W

5. Position of T: Only one container is placed between container W and container T.
⇒ Position 3 = T

6. Position of P: Container P is placed immediately above container T.
⇒ Position 2 = P

7. Positions of S, X, and V: Two containers are kept between container S and container Q. Since Q is at position 8, S must be at position 5.
⇒ Position 5 = S
Container X is placed immediately below container S.
⇒ Position 6 = X
Container V is placed between container X and container Q.
⇒ Position 7 = V

Complete Vertical Stack (Top to Bottom):
Position 1: W
Position 2: P
Position 3: T
Position 4: R
Position 5: S
Position 6: X
Position 7: V
Position 8: Q
Position 9: U

Container S is positioned at 5th from the top. Therefore, there are 4 containers (W, P, T, and R) positioned above container S.